Method and apparatus for cooling steel pipe

C - Chemistry – Metallurgy – 21 – D

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38/28, 148/54

C21D 1/62 (2006.01) C21D 9/08 (2006.01)

Patent

CA 1196259

Abstract A method and apparatus for cooling at least the inside of steel pipes. Cooling is effected while restraining the radial displacement of a pipe at a point not more than 500 mm, or preferably not more than 250 mm, away from each end of the pipe and at intermediate points spaced at intervals of 1.0 m to 2.5 m. Elliptical deformation in the cross section of larger-diameter pipes also is pre- vented by adding to the aforementioned cooling method and apparatus a device and step to rotate the pipe being cooled at a rate of 30 to 150 tines per minute. The restraining device at one end of the pipe is designed to move in the direc- tion of the pipe axis so that the restraint of the radial displacement at a point not more than 500 mm away from that end is at all times ensured even when pipe length varies.

415882

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